U.S.A.

Several of the speed demons on the U.S. women's Olympic swimming team sported fierce talons. Dana Vollmer tweeted about her "lucky white polish with a little added dalmatian flair" before nabbing a gold and world record for the 100m butterfly, while "Call Me Maybe" "star" Missy Franklin's American flag-themed mani sliced through the water for a bronze in the 4x100 freestyle relay.